System of lubricating gas engines



Sept. 4, 1923. 1,466,857

E. o. srERNs SYSTEM OF' LUBRICATING GAS INGlINlSl Filed Sent. 13. 1921Edward opems 15 pins as well as many in the crank case o My inventionhas riding of a system matic in its operation and thorou Patented Sept.4, 1923. v

UNITED STATES PATENT OFFICE.

EDWARD O. STERNE, OF COLUMBUS, LUBRICATOB. COMPANY, OF C Be it knowncitizen of the OHIO, ASSIGNOB TO LUIBUS, OHIO, .L CORPORATION OF ORIO.

THE STERNS GAS ENGINE SYSTEM OF LUBBICATING GAS.-

VApplication. lled September 13, 1921. To all wlwm it maa;

concern.: that I, Enwann O. STEaNs, a 'United States, residing atColutnbus, in the county of Franklin and State of Ohio,

and useful Improvement in Systems of Lubricating Gas have invented acertain new Engines, of which the following is a specification.

My invention relates to a system of lubrication and provide for thelubrication of the combustion chamber and is particularly` designed tosuch parts as are immediately adjacent thereto, as for instance, the

cylinder walls,

inder will reg 0 trolling the provide means valves, valve stems andwrist of the operative parts the engine.

for its object the prowhich is entirel autoglily dein connection withthe lubricating system whereby the vacuum caused by the pistondisplacement within the cylulate and control the quantity of lubricantsupplied to the combustion chamber.

These and other objects will be apparent from the followingspecifications taken in 30. connection with the annexed drawings.

With the above objects in view my invention consists in tem whereinthere `is providing a lubricating sysa proper lubricant reservoir orother source, a conduit leading 35 from said source to the combustionchamber of an internail combustion engine, and

means within said conduit operable by the vacuum created by the pistondisplacement within said chamber for regulating and conqu therethrough.

The invention further consists in antity of lubricant supplied parts andcombination of parts, all of which will be hereinafter claimed.

It is a well more fully set forth and known fact that in internalcombustion engines a vacuum is created by the piston displacement withinthe cylinder and that this vacuum is ein loyed to convey the gas to thecombustion cliamber, and that a valve, commonly known as a butter-ily islocated between the gas roducin device (carburetor) a nd the com ustionc amber the suppl of Serial Re. 500,305.

for regulating the supply of gas thereto. This construction causes 'a'greater density of vacuum when the gas supply is diminished and .theengine running slow and a less density when the gas supply is increasedand the engine running fast. Hence it will le readily realized that asthe engine is run fast a greater amount of lubricant is required and adecreased vacuum ull must of necessity rovide a greater lubricantsupply, while t e slow runnin of the engine requires that l' e suppliedand the conse uent increased vacuum pull must decrease t e quantit oflubricant, and finally the ,stopping of the engine must also stop Qlubricant entirely.

With t e above in mind I have devised my lubricating system as describedin the fo lowing specification.

In the drawings Fig. 1 is a side elevation of an Ordinar internalcombustion engine showing how Y prefer to adapt my invention t ereto.

Fig. 2 is ahorizontal section of a valve construction employed forcarrying out my invention, and

Fig. 3 is a right hand end view of the valve showing how the same isattached to thefintake manifold of an engine.

5 designates the main casing of the valve, said casing being externallyVthreaded at its ends to receive centrally perforated caps 6 and 7. Themain casing containsjahe valve 8 of double cone form and having a stein9 sliding in a centrally bored nut 10 threaded to the interior of thecasing. The valve `is (provided with a spring 11 seated at one on thenut 10 and pressing at its other end against a collar 12 on the val hecap 6 is provided with a recess at 13 of slightly larger diameter thanthe valve and the bottom of said recess is provided with a seat for thevalve so that when the valve is seated thereon the passage through thecap is closed. The assage at that end of the casing covered by tlie cap6 is beveled out or enlarged as shown at 14 So that the valve has roomfor movement and so that the size of the passage for lubricant aroundthe valve varies according to the position of the valve, said passageowing smaller as the valve is moved towar the main casing.

The nutv 10 has a stem 15 extending ve stem.

through the perforation of the ca 7said stem eing rovided with a hand e16 by means of w ich the nut may be turned to vary the pressure of thespring on the valve. The stem can be provided with a packing nut 17. -At18 is a vent to make easy the movement of the nut and valve stem.

The main casing has a chambered late ral extension 19, threaded toengage a tapping in the neck of the manifold of the en ine and saidlateral extension 19 is equippe with an angled nozzle 20 openingupwardly and centra ly in the necli'` of the manifold, see Fig. 3, besucked up from the so that lubricant may the manifold and main valvechamber into cylinders.

21 designates an oil reservoir mounted on the dash, said reservoir beingprovided with a i e 22 connected with the cap 6.

hen the engine is idle the cone valve 8 is normally seated in the cap 6,thus entirely closing oil' the lubricant supply but as soon as theengine is started the vacuum created as above set forth causes the valve8 to move against the pressure of the spring 11. If the engine is racedat starting a light vacuum pull is created and oil flows freely aroundthe cone valve 8, past the openings 13 and 14 and carried by such pullthrough the intake manifold and into the combustion chamber of theengine but as soon as the engine is throttled the greater vacuum pullcauses the valve 8 to diminish the space14 between it and the taperedopening in the end of the main casing .5 thereby diminishing the supplof lubricant, in accordance to the amount o throttling and vacuum pull.When the en ine is stopped and no vacuum resent then t e spring 11forces the valve 8 into its normal position and the lubricant supply isagain shut oil.

From the above it will be seen that a perfeet control can be maintainedafter preliminary adjustments have been made by means of the nut 10 andits coacting arts,

While I have set forth in detail a structure designed to carry out myinvention I do not wish to be limited thereto exce t in so far as theannexed claims shall imit me. as modifications may be made in thedetails of construction without departing from myV invention.

Having thus described my invention, what I wish to claim is:

1. In a system of lubrication the combination with an internal explosiveengine creating a vacuum b the piston displacement thereof, of a lurcant supply source, a conduit leading therefrom to the explosivechamber of said engine, and a valve located in said conduit', said valvebeing operable by said vacuum and adapted to control and regulate thesupply of lubricant to said combustion chamber and permitting suctionvcreated by said vacuum to convey the lubricant to said combustionchamber.

2. In a system of lubrication the combination with an internal explosiveengine Creatin a vacuum by the piston displacement t ereof, of a luricant supply source, a conduit leading therefrom to the explosivechamberof said engine and a valve located in said conduit operable bysaid vacuum for controlling the supply of lubricant passing therethrough$in roportion to the speed of the engine and or preventin the passing oflubricant therethrough-w en said engine is idle.

3. ln a system of lubrication the combination with an internal explosiveengine creating-a vacuum by the piston displacement thereof, of alubricant supply source, a.. conduit leading therefrom to t e explosivechamber of said engine, a valve located in said conduit o rable by saidvacuum for controlling an regulatin the supply of lubricant to saidcombustion chamber and means for predetermining the quantity oflubricant al owed to pass therethrough.

4. In a system of lubrication the combination with an internal explosiveengine creating a vacuum b the piston displacement thereof of alubricant supply source, a conduit leading therefrom to the explosivechamber of said en ine and a valve located in sai conduit operable bsaid vacuum for controlling the supply o lubricant passin therethroughin proportion to thespee of the engine and for preventing the (passingof lubricant therethrough when sai engine is idle and means forpredetermining the uantity of lubricant allowed to pass t erethrough.

EDWARD O. STERNS.

